/*******************************************************************************
 * Copyright 2009, 2010 Innovation Gate GmbH. All Rights Reserved.
 * 
 * This file is part of the OpenWGA server platform.
 * 
 * OpenWGA is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * In addition, a special exception is granted by the copyright holders
 * of OpenWGA called "OpenWGA plugin exception". You should have received
 * a copy of this exception along with OpenWGA in file COPYING.
 * If not, see <http://www.openwga.com/gpl-plugin-exception>.
 * 
 * OpenWGA is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with OpenWGA in file COPYING.
 * If not, see <http://www.gnu.org/licenses/>.
 ******************************************************************************/

package de.innovationgate.wgpublisher.vlink;

import java.util.List;

import de.innovationgate.utils.WGUtils;
import de.innovationgate.webgate.api.WGContent;
import de.innovationgate.webgate.api.WGException;
import de.innovationgate.webgate.api.WGIllegalDataException;
import de.innovationgate.wga.server.api.WGA;
import de.innovationgate.wgpublisher.vlink.VirtualLinkTarget.Type;

public class FileVirtualLinkResolver implements VirtualLinkResolver {

    @Override
    public VirtualLinkTarget resolve(WGA wga, WGContent content) throws WGException {

        List<String> elements = WGUtils.deserializeCollection(content.getVirtualLink(), "/");
        if (elements.size() < 2) {
            throw new WGIllegalDataException("Virtual link of type '" + content.getVirtualLinkType() + "' in " + content.getDocumentKey() + "' has too few elements (< 2)");
        }

        String containerName = (String) elements.get(0);
        String fileName = (String) elements.get(1);
        String dbKey = (elements.size() == 3 ? elements.get(2) : content.getDatabase().getDbReference());
        
        VirtualLinkTarget target = new VirtualLinkTarget(Type.ATTACHMENT);
        target.setContainerKey(containerName);
        target.setFileName(fileName);
        return target;
        

    }

}
